In 1968 Nayar (then a central committee member of the party), together with S. Andi Thevar broke away from AIFB and founded the Revolutionary Forward Bloc. Nayar accused the Forward Bloc of deviating from its socialist principles through its cooperation with the rightwing Swantantra Party.At the time, the AIFB members of the Tamil Nadu legislative assembly sat in the same legislative group as the Swatantra members. The leader of the Forward Bloc in Tamil Nadu, P.K. Mookiah Thevar, was considered as very close to the regional Swatantra leader C. Rajagopalachari. Moreover, Thevar was leading the Swatantra group in the assembly. Nayar became the chairman of RFB. The RFB was, however, reunified with AIFB in 1979.